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Use of near infra-red spectroscopy in evaluation of source-sink manipulation to increase the soluble sugar content of stonefruit

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Walsh, K. B., Long, R. L. and Middleton, S. G. (2007) Use of near infra-red spectroscopy in evaluation of source-sink manipulation to increase the soluble sugar content of stonefruit. Journal of Horticultural Science & Biotechnology, 82 (2). pp. 316-322. ISSN 1462-0316

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Article Link: https://doi.org/10.1080/14620316.2007.11512235

Abstract

An in-line grading system, with near infrared (NIR) spectrometry and weigh-cell capability, was used to evaluate the total soluble solids (TSS) contents and fresh weights (FW) of all fruit from peach, nectarine and plum trees subjected to four fruit-thinning protocols. The grading platform achieved root mean squared errors of predictions for TSS of < 0.8%, and for FWs of 0.5 g. Thinning to one fruit cm–2 trunk cross-sectional area resulted in an increase in fruit TSS content of approx. 2% for peach and nectarine, and 0.5% TSS for plum, and an increase in fruit FW by an average of 30 g for nectarine, 40 g for peach, and 10 g for plum fruit. Fruits harvested from the upper tree canopy (> 3 m height) were higher in TSS contents compared to lower (0 – 1.5 m) canopy fruit (3% increase in TSS for peach, 2% for nectarine, and 1.5% for plum). Future work to introduce NIR technology into agronomic programmes aimed at improving the TSS contents of fruit is discussed.

Item Type:Article
Subjects:Technology > Technology (General) > Spectroscopy > NIR (Near Infrared)
Plant culture > Fruit and fruit culture > Culture of individual fruits or types of fruit > Stonefruit
Live Archive:19 Feb 2024 01:09
Last Modified:19 Feb 2024 01:09

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